AQSQID: 401090097

Site Name: Near Road Okc

Location: Oklahoma City (Meridian Ave Corridor), OK

Reporting: True, Located: True

Current AQI: 38.0

Oklahoma City (Meridian Ave Corridor) OK, US: 35.502968, -97.577674

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 28, 2020, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.4 ppb (4) 18.0 μg/m3 (16) 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.5 ppb (6) 32.0 μg/m3 (29) 22.8 μg/m3 (73) 73.0
 
March 28, 2020, 8 a.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.6 ppb (7) 30.0 μg/m3 (27) 22.3 μg/m3 (72) 72.0
 
March 28, 2020, 7 a.m. 12.0 ppb (11) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.6 ppb (7) 28.0 μg/m3 (25) 20.8 μg/m3 (69) 69.0
 
March 28, 2020, 6 a.m. 9.0 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) 29.0 μg/m3 (26) 19.2 μg/m3 (65) 65.0
 
March 28, 2020, 5 a.m. 9.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 28.0 μg/m3 (25) 19.1 μg/m3 (65) 65.0
 
March 28, 2020, 4 a.m. 9.0 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.6 ppb (7) 28.0 μg/m3 (25) 18.2 μg/m3 (63) 63.0
 
March 28, 2020, 3 a.m. 18.0 ppb (17) 8.0 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.6 ppb (7) 28.0 μg/m3 (25) 18.1 μg/m3 (63) 63.0
 
March 28, 2020, 2 a.m. 20.0 ppb (19) 10.0 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.6 ppb (7) 29.0 μg/m3 (26) 16.4 μg/m3 (59) 59.0
 
March 28, 2020, 1 a.m. 26.0 ppb (24) 16.0 ppb (15) N/A 9.0 ppb (8) N/A N/A N/A 0.7 ppb (8) 31.0 μg/m3 (28) 16.6 μg/m3 (60) 60.0
 
March 28, 2020, midnight 31.0 ppb (29) 21.0 ppb (19) N/A 10.0 ppb (9) N/A N/A N/A 0.8 ppb (9) 30.0 μg/m3 (27) 15.8 μg/m3 (58) 58.0
 
March 27, 2020, 11 p.m. 40.0 ppb (37) 25.0 ppb (23) N/A 14.0 ppb (13) N/A N/A N/A 0.9 ppb (10) 36.0 μg/m3 (33) 16.2 μg/m3 (59) 59.0
 
March 27, 2020, 10 p.m. 39.0 ppb (36) 26.0 ppb (24) N/A 13.0 ppb (12) N/A N/A N/A 0.9 ppb (10) 42.0 μg/m3 (38) 16.6 μg/m3 (60) 60.0
 
March 27, 2020, 9 p.m. 42.0 ppb (39) 24.0 ppb (22) N/A 17.0 ppb (16) N/A N/A N/A 1.0 ppb (11) 45.0 μg/m3 (41) 18.2 μg/m3 (63) 63.0
 
March 27, 2020, 8 p.m. 23.0 ppb (21) 11.0 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A 0.7 ppb (8) 39.0 μg/m3 (35) 18.7 μg/m3 (64) 64.0
 
March 27, 2020, 7 p.m. 28.0 ppb (26) 16.0 ppb (15) N/A 11.0 ppb (10) N/A N/A N/A 0.6 ppb (7) 47.0 μg/m3 (43) 21.5 μg/m3 (70) 70.0
 
March 27, 2020, 6 p.m. 33.0 ppb (31) 19.0 ppb (18) N/A 14.0 ppb (13) N/A N/A N/A 0.7 ppb (8) 53.0 μg/m3 (48) 22.1 μg/m3 (71) 71.0
 
March 27, 2020, 5 p.m. 23.0 ppb (21) 12.0 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.6 ppb (7) 45.0 μg/m3 (41) 20.1 μg/m3 (67) 67.0
 
March 27, 2020, 4 p.m. 37.0 ppb (34) 22.0 ppb (20) N/A 15.0 ppb (14) N/A N/A N/A 0.6 ppb (7) 54.0 μg/m3 (49) 22.3 μg/m3 (72) 72.0
 
March 27, 2020, 3 p.m. 31.0 ppb (29) 18.0 ppb (17) N/A 13.0 ppb (12) N/A N/A N/A 0.6 ppb (7) 49.0 μg/m3 (45) 22.6 μg/m3 (73) 73.0
 
March 27, 2020, 2 p.m. 36.0 ppb (33) 20.0 ppb (19) N/A 16.0 ppb (15) N/A N/A N/A 0.6 ppb (7) 44.0 μg/m3 (40) 23.0 μg/m3 (73) 73.0
 
March 27, 2020, 1 p.m. 23.0 ppb (21) 10.0 ppb (9) N/A 13.0 ppb (12) N/A N/A N/A 0.6 ppb (7) 42.0 μg/m3 (38) 23.8 μg/m3 (75) 75.0
 
March 27, 2020, noon 22.0 ppb (20) 7.0 ppb (6) N/A 15.0 ppb (14) N/A N/A N/A 0.6 ppb (7) 40.0 μg/m3 (36) 23.9 μg/m3 (75) 75.0
 
March 27, 2020, 11 a.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.6 ppb (7) 60.0 μg/m3 (52) 25.1 μg/m3 (78) 78.0
 
March 27, 2020, 10 a.m. 15.0 ppb (14) 5.0 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.6 ppb (7) 36.0 μg/m3 (33) 24.5 μg/m3 (77) 77.0
 
March 27, 2020, 9 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.5 ppb (6) 34.0 μg/m3 (31) 23.9 μg/m3 (75) 75.0
 
March 27, 2020, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) 33.0 μg/m3 (30) 23.9 μg/m3 (75) 75.0
 
March 27, 2020, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) 33.0 μg/m3 (30) 23.6 μg/m3 (75) 75.0
 
March 27, 2020, 6 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 34.0 μg/m3 (31) 23.9 μg/m3 (75) 75.0
 
March 27, 2020, 5 a.m. 10.0 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) 31.0 μg/m3 (28) 23.4 μg/m3 (74) 74.0
 
March 27, 2020, 4 a.m. 11.0 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 31.0 μg/m3 (28) 22.6 μg/m3 (73) 73.0
 
March 27, 2020, 3 a.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.6 ppb (7) 35.0 μg/m3 (32) 21.4 μg/m3 (70) 70.0
 
March 27, 2020, 2 a.m. 17.0 ppb (16) 7.0 ppb (6) N/A 9.0 ppb (8) N/A N/A N/A 0.6 ppb (7) 35.0 μg/m3 (32) 18.2 μg/m3 (63) 63.0
 
March 27, 2020, 1 a.m. 23.0 ppb (21) 9.0 ppb (8) N/A 13.0 ppb (12) N/A N/A N/A 0.7 ppb (8) 34.0 μg/m3 (31) 17.7 μg/m3 (62) 62.0
 
March 27, 2020, midnight 34.0 ppb (31) 17.0 ppb (16) N/A 17.0 ppb (16) N/A N/A N/A 0.8 ppb (9) 38.0 μg/m3 (35) 17.3 μg/m3 (61) 61.0
 
March 26, 2020, 11 p.m. 46.0 ppb (43) 20.0 ppb (19) N/A 25.0 ppb (23) N/A N/A N/A 0.8 ppb (9) 37.0 μg/m3 (34) 12.8 μg/m3 (52) 52.0
 
March 26, 2020, 10 p.m. 15.0 ppb (14) 6.0 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 31.0 μg/m3 (28) 10.6 μg/m3 (44) 44.0
 
March 26, 2020, 9 p.m. 14.0 ppb (13) 6.0 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 27.0 μg/m3 (25) 9.4 μg/m3 (39) 39.0
 
March 26, 2020, 8 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 34.0 μg/m3 (31) 10.6 μg/m3 (44) 44.0
 
March 26, 2020, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) 29.0 μg/m3 (26) 11.1 μg/m3 (46) 46.0
 
March 26, 2020, 6 p.m. 7.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) N/A N/A 6.0
 
March 26, 2020, 5 p.m. 13.0 ppb (12) 6.0 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) 27.0 μg/m3 (25) 4.8 μg/m3 (20) 25.0
 
March 26, 2020, 4 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) 29.0 μg/m3 (26) 5.9 μg/m3 (25) 26.0
 
March 26, 2020, 3 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) 20.0 μg/m3 (18) 5.5 μg/m3 (23) 23.0
 
March 26, 2020, 2 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) 32.0 μg/m3 (29) 7.8 μg/m3 (32) 32.0
 
March 26, 2020, 1 p.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) 36.0 μg/m3 (33) 10.7 μg/m3 (45) 45.0
 
March 26, 2020, noon 9.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) 34.0 μg/m3 (31) 11.6 μg/m3 (48) 48.0
 
March 26, 2020, 11 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) 20.0 μg/m3 (18) 10.3 μg/m3 (43) 43.0
 
March 26, 2020, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) 22.0 μg/m3 (20) 10.9 μg/m3 (45) 45.0
 
March 26, 2020, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) 20.0 μg/m3 (18) 11.5 μg/m3 (48) 48.0
 
March 26, 2020, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) 21.0 μg/m3 (19) 10.9 μg/m3 (45) 45.0
 
March 26, 2020, 7 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) 20.0 μg/m3 (18) 8.6 μg/m3 (36) 36.0
 
March 26, 2020, 6 a.m. 15.0 ppb (14) 2.0 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) 28.0 μg/m3 (25) 6.6 μg/m3 (28) 28.0
 
March 26, 2020, 5 a.m. 19.0 ppb (18) 5.0 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) 30.0 μg/m3 (27) 6.8 μg/m3 (28) 28.0
 
March 26, 2020, 4 a.m. 24.0 ppb (22) 4.0 ppb (4) N/A 20.0 ppb (19) N/A N/A N/A 0.5 ppb (6) 18.0 μg/m3 (16) 5.3 μg/m3 (22) 22.0
 
March 26, 2020, 3 a.m. 34.0 ppb (31) 10.0 ppb (9) N/A 23.0 ppb (21) N/A N/A N/A 0.6 ppb (7) 26.0 μg/m3 (24) 6.1 μg/m3 (25) 31.0
 
March 26, 2020, 2 a.m. 47.0 ppb (44) 17.0 ppb (16) N/A 30.0 ppb (28) N/A N/A N/A 0.6 ppb (7) 26.0 μg/m3 (24) 5.6 μg/m3 (23) 44.0
 
March 26, 2020, 1 a.m. 39.0 ppb (36) 14.0 ppb (13) N/A 25.0 ppb (23) N/A N/A N/A 0.6 ppb (7) 24.0 μg/m3 (22) 5.3 μg/m3 (22) 36.0
 
March 26, 2020, midnight 16.0 ppb (15) 4.0 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) 18.0 μg/m3 (16) 3.8 μg/m3 (16) 16.0
 
March 25, 2020, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) 14.0 μg/m3 (13) 3.4 μg/m3 (14) 14.0
 
March 25, 2020, 10 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) 15.0 μg/m3 (14) 3.8 μg/m3 (16) 16.0
 
March 25, 2020, 9 p.m. 12.0 ppb (11) 4.0 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) 18.0 μg/m3 (16) 4.5 μg/m3 (19) 19.0
 
March 25, 2020, 8 p.m. 31.0 ppb (29) 14.0 ppb (13) N/A 17.0 ppb (16) N/A N/A N/A 0.5 ppb (6) 26.0 μg/m3 (24) 5.7 μg/m3 (24) 29.0
 
March 25, 2020, 7 p.m. 40.0 ppb (37) 21.0 ppb (19) N/A 19.0 ppb (18) N/A N/A N/A 0.5 ppb (6) 28.0 μg/m3 (25) 5.8 μg/m3 (24) 37.0
 
March 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) 30.0 μg/m3 (27) 6.3 μg/m3 (26) 27.0
 
March 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 27.0 μg/m3 (25) 6.6 μg/m3 (28) 28.0
 
March 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 5.8 μg/m3 (24) 24.0
 
March 25, 2020, 3 p.m. 50.0 ppb (46) 30.0 ppb (28) N/A 19.0 ppb (18) N/A N/A N/A N/A 20.0 μg/m3 (18) 5.2 μg/m3 (22) 46.0
 
March 25, 2020, 2 p.m. 45.0 ppb (42) 26.0 ppb (24) N/A 18.0 ppb (17) N/A N/A N/A 0.6 ppb (7) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 42.0
 
March 25, 2020, 1 p.m. 60.0 ppb (56) 33.0 ppb (31) N/A 26.0 ppb (24) N/A N/A N/A 0.7 ppb (8) 21.0 μg/m3 (19) 6.2 μg/m3 (26) 56.0
 
March 25, 2020, noon 64.0 ppb (61) 42.0 ppb (39) N/A 21.0 ppb (19) N/A N/A N/A 0.8 ppb (9) 25.0 μg/m3 (23) 9.1 μg/m3 (38) 61.0
 
March 25, 2020, 11 a.m. 44.0 ppb (41) 24.0 ppb (22) N/A 20.0 ppb (19) N/A N/A N/A 0.7 ppb (8) 19.0 μg/m3 (17) 8.3 μg/m3 (35) 41.0
 
March 25, 2020, 10 a.m. 18.0 ppb (17) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A N/A 0.5 ppb (6) 16.0 μg/m3 (15) 10.4 μg/m3 (43) 43.0
 
March 25, 2020, 9 a.m. 33.0 ppb (31) 12.0 ppb (11) N/A 21.0 ppb (19) N/A N/A N/A 0.6 ppb (7) 21.0 μg/m3 (19) 12.9 μg/m3 (52) 52.0
 
March 25, 2020, 8 a.m. 32.0 ppb (30) 14.0 ppb (13) N/A 18.0 ppb (17) N/A N/A N/A 0.7 ppb (8) 27.0 μg/m3 (25) 16.8 μg/m3 (60) 60.0
 
March 25, 2020, 7 a.m. 45.0 ppb (42) 29.0 ppb (27) N/A 15.0 ppb (14) N/A N/A N/A 0.9 ppb (10) 33.0 μg/m3 (30) 18.7 μg/m3 (64) 64.0
 
March 25, 2020, 6 a.m. 44.0 ppb (41) 26.0 ppb (24) N/A 17.0 ppb (16) N/A N/A N/A 0.9 ppb (10) 32.0 μg/m3 (29) 19.3 μg/m3 (66) 66.0
 
March 25, 2020, 5 a.m. 37.0 ppb (34) 18.0 ppb (17) N/A 18.0 ppb (17) N/A N/A N/A 1.0 ppb (11) 35.0 μg/m3 (32) 24.4 μg/m3 (76) 76.0
 
March 25, 2020, 4 a.m. 33.0 ppb (31) 12.0 ppb (11) N/A 21.0 ppb (19) N/A N/A N/A 1.0 ppb (11) 38.0 μg/m3 (35) 27.3 μg/m3 (83) 83.0
 
March 25, 2020, 3 a.m. 28.0 ppb (26) 5.0 ppb (5) N/A 22.0 ppb (20) N/A N/A N/A 0.8 ppb (9) 33.0 μg/m3 (30) 21.7 μg/m3 (71) 71.0
 
March 25, 2020, 2 a.m. 27.0 ppb (25) 3.0 ppb (3) N/A 23.0 ppb (21) N/A N/A N/A 0.7 ppb (8) 30.0 μg/m3 (27) 17.7 μg/m3 (62) 62.0
 
March 25, 2020, 1 a.m. 17.0 ppb (16) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A N/A 0.5 ppb (6) 19.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
March 25, 2020, midnight 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) 11.0 μg/m3 (10) 7.5 μg/m3 (31) 31.0
 
March 24, 2020, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) 7.0 μg/m3 (6) 3.6 μg/m3 (15) 15.0
 
March 24, 2020, 10 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (3) 9.0 μg/m3 (8) 6.1 μg/m3 (25) 25.0
 
March 24, 2020, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) 13.0 μg/m3 (12) 10.2 μg/m3 (42) 42.0
 
March 24, 2020, 8 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) 11.0 μg/m3 (10) 9.4 μg/m3 (39) 39.0
 
March 24, 2020, 7 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) 8.0 μg/m3 (7) 5.9 μg/m3 (25) 25.0
 
March 24, 2020, 6 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 12.0
 
March 24, 2020, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) 6.0 μg/m3 (5) 2.6 μg/m3 (11) 11.0
 
March 24, 2020, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 8.0
 
March 24, 2020, 3 p.m. 32.0 ppb (30) 20.0 ppb (19) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) 12.0 μg/m3 (11) 3.2 μg/m3 (13) 30.0
 
March 24, 2020, 2 p.m. 41.0 ppb (38) 25.0 ppb (23) N/A 16.0 ppb (15) N/A N/A N/A 0.5 ppb (6) 11.0 μg/m3 (10) 3.6 μg/m3 (15) 38.0
 
March 24, 2020, 1 p.m. 43.0 ppb (40) 25.0 ppb (23) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) 12.0 μg/m3 (11) 3.7 μg/m3 (15) 40.0
 
March 24, 2020, noon 37.0 ppb (34) 19.0 ppb (18) N/A 17.0 ppb (16) N/A N/A N/A 0.5 ppb (6) 10.0 μg/m3 (9) 3.3 μg/m3 (14) 34.0
 
March 24, 2020, 11 a.m. 24.0 ppb (22) 15.0 ppb (14) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) 9.0 μg/m3 (8) 3.3 μg/m3 (14) 22.0
 
March 24, 2020, 10 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) 15.0 μg/m3 (14) 9.7 μg/m3 (40) 40.0
 
March 24, 2020, 9 a.m. 8.0 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.4 ppb (4) 18.0 μg/m3 (16) 12.1 μg/m3 (50) 50.0
 
March 24, 2020, 8 a.m. 7.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) 16.0 μg/m3 (15) 10.8 μg/m3 (45) 45.0
 
March 24, 2020, 7 a.m. 7.0 ppb (6) 4.0 ppb (4) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (3) 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
March 24, 2020, 6 a.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (4) 14.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
March 24, 2020, 5 a.m. 8.0 ppb (7) 5.0 ppb (5) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (4) 13.0 μg/m3 (12) 7.5 μg/m3 (31) 31.0
 
March 24, 2020, 4 a.m. 11.0 ppb (10) 6.0 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) 12.0 μg/m3 (11) 7.6 μg/m3 (32) 32.0
 
March 24, 2020, 3 a.m. 24.0 ppb (22) 14.0 ppb (13) N/A 10.0 ppb (9) N/A N/A N/A 0.5 ppb (6) 16.0 μg/m3 (15) 8.8 μg/m3 (37) 37.0
 
March 24, 2020, 2 a.m. 22.0 ppb (20) 10.0 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.5 ppb (6) 13.0 μg/m3 (12) 7.5 μg/m3 (31) 31.0
 
March 24, 2020, 1 a.m. 26.0 ppb (24) 15.0 ppb (14) N/A 11.0 ppb (10) N/A N/A N/A 0.5 ppb (6) 15.0 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
March 24, 2020, midnight 27.0 ppb (25) 17.0 ppb (16) N/A 9.0 ppb (8) N/A N/A N/A 0.5 ppb (6) 14.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
March 23, 2020, 11 p.m. 36.0 ppb (33) 23.0 ppb (21) N/A 12.0 ppb (11) N/A N/A N/A 0.6 ppb (7) 16.0 μg/m3 (15) 6.7 μg/m3 (28) 33.0
 
March 23, 2020, 10 p.m. 32.0 ppb (30) 22.0 ppb (20) N/A 9.0 ppb (8) N/A N/A N/A 0.6 ppb (7) 18.0 μg/m3 (16) 7.1 μg/m3 (30) 30.0
 
March 23, 2020, 9 p.m. 35.0 ppb (32) 25.0 ppb (23) N/A 10.0 ppb (9) N/A N/A N/A 0.6 ppb (7) 19.0 μg/m3 (17) 7.9 μg/m3 (33) 33.0
 
March 23, 2020, 8 p.m. 43.0 ppb (40) 31.0 ppb (29) N/A 11.0 ppb (10) N/A N/A N/A 0.7 ppb (8) 23.0 μg/m3 (21) 8.6 μg/m3 (36) 40.0
 
March 23, 2020, 7 p.m. 36.0 ppb (33) 26.0 ppb (24) N/A 9.0 ppb (8) N/A N/A N/A 0.5 ppb (6) 18.0 μg/m3 (16) 8.3 μg/m3 (35) 35.0
 
March 23, 2020, 6 p.m. 35.0 ppb (32) 26.0 ppb (24) N/A 9.0 ppb (8) N/A N/A N/A 0.5 ppb (6) 18.0 μg/m3 (16) 8.0 μg/m3 (33) 33.0
 
March 23, 2020, 5 p.m. 38.0 ppb (35) 29.0 ppb (27) N/A 9.0 ppb (8) N/A N/A N/A 0.6 ppb (7) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
March 23, 2020, 4 p.m. 41.0 ppb (38) 32.0 ppb (30) N/A 8.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 20.0 μg/m3 (18) 8.4 μg/m3 (35) 38.0
 
March 23, 2020, 3 p.m. 36.0 ppb (33) 28.0 ppb (26) N/A 8.0 ppb (7) N/A N/A N/A 0.5 ppb (6) 17.0 μg/m3 (15) 7.7 μg/m3 (32) 33.0
 
March 23, 2020, 2 p.m. 47.0 ppb (44) 37.0 ppb (34) N/A 10.0 ppb (9) N/A N/A N/A 0.6 ppb (7) 19.0 μg/m3 (17) 7.2 μg/m3 (30) 44.0
 
March 23, 2020, 1 p.m. 46.0 ppb (43) 36.0 ppb (33) N/A 10.0 ppb (9) N/A N/A N/A 0.6 ppb (7) 15.0 μg/m3 (14) 6.7 μg/m3 (28) 43.0
 
March 23, 2020, noon 46.0 ppb (43) 36.0 ppb (33) N/A 9.0 ppb (8) N/A N/A N/A 0.7 ppb (8) 14.0 μg/m3 (13) 7.1 μg/m3 (30) 43.0
 
March 23, 2020, 11 a.m. 38.0 ppb (35) 30.0 ppb (28) N/A 8.0 ppb (7) N/A N/A N/A 0.6 ppb (7) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 35.0
 
March 23, 2020, 10 a.m. 29.0 ppb (27) 19.0 ppb (18) N/A 9.0 ppb (8) N/A N/A N/A 0.5 ppb (6) 14.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
March 23, 2020, 9 a.m. 21.0 ppb (19) 14.0 ppb (13) N/A 7.0 ppb (6) N/A N/A N/A 0.5 ppb (6) 17.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
March 23, 2020, 8 a.m. 14.0 ppb (13) 7.0 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) 14.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
March 23, 2020, 7 a.m. 20.0 ppb (19) 10.0 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) 12.0 μg/m3 (11) 6.7 μg/m3 (28) 28.0
 
March 23, 2020, 6 a.m. 14.0 ppb (13) 5.0 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
March 23, 2020, 5 a.m. 17.0 ppb (16) 8.0 ppb (7) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) 11.0 μg/m3 (10) 5.7 μg/m3 (24) 24.0
 
March 23, 2020, 4 a.m. 26.0 ppb (24) 14.0 ppb (13) N/A 11.0 ppb (10) N/A N/A N/A 0.5 ppb (6) 12.0 μg/m3 (11) 6.3 μg/m3 (26) 26.0
 
March 23, 2020, 3 a.m. 30.0 ppb (28) 16.0 ppb (15) N/A 14.0 ppb (13) N/A N/A N/A 0.6 ppb (7) 16.0 μg/m3 (15) 9.5 μg/m3 (40) 40.0
 
March 23, 2020, 2 a.m. 37.0 ppb (34) 21.0 ppb (19) N/A 15.0 ppb (14) N/A N/A N/A 0.6 ppb (7) 16.0 μg/m3 (15) 8.6 μg/m3 (36) 36.0
 
March 23, 2020, 1 a.m. 28.0 ppb (26) 15.0 ppb (14) N/A 13.0 ppb (12) N/A N/A N/A 0.6 ppb (7) 12.0 μg/m3 (11) 5.9 μg/m3 (25) 26.0
 
March 23, 2020, midnight 17.0 ppb (16) 8.0 ppb (7) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 21.0
 
March 22, 2020, 11 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) 8.0 μg/m3 (7) 4.1 μg/m3 (17) 17.0
 
March 22, 2020, 10 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
March 22, 2020, 9 p.m. 9.0 ppb (8) 4.0 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) 9.0 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
March 22, 2020, 8 p.m. 14.0 ppb (13) 8.0 ppb (7) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
March 22, 2020, 7 p.m. 17.0 ppb (16) 11.0 ppb (10) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) 8.0 μg/m3 (7) 3.6 μg/m3 (15) 16.0
 
March 22, 2020, 6 p.m. 12.0 ppb (11) 7.0 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) 7.0 μg/m3 (6) 3.3 μg/m3 (14) 14.0
 
March 22, 2020, 5 p.m. 16.0 ppb (15) 10.0 ppb (9) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) 7.0 μg/m3 (6) 3.3 μg/m3 (14) 15.0
 
March 22, 2020, 4 p.m. 23.0 ppb (21) 14.0 ppb (13) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) 7.0 μg/m3 (6) 3.5 μg/m3 (15) 21.0
 
March 22, 2020, 3 p.m. 33.0 ppb (31) 23.0 ppb (21) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) 6.0 μg/m3 (5) 3.7 μg/m3 (15) 31.0
 
March 22, 2020, 2 p.m. 25.0 ppb (23) 18.0 ppb (17) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) 6.0 μg/m3 (5) 3.9 μg/m3 (16) 23.0
 
March 22, 2020, 1 p.m. 18.0 ppb (17) 13.0 ppb (12) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) 7.0 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
March 22, 2020, noon 14.0 ppb (13) 7.0 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
March 22, 2020, 11 a.m. 11.0 ppb (10) 6.0 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (4) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
March 22, 2020, 10 a.m. 8.0 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) 11.0 μg/m3 (10) 8.2 μg/m3 (34) 34.0
 
March 22, 2020, 9 a.m. 13.0 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) 17.0 μg/m3 (15) 13.4 μg/m3 (53) 53.0
 
March 22, 2020, 8 a.m. 12.0 ppb (11) 5.0 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) 21.0 μg/m3 (19) 16.8 μg/m3 (60) 60.0
 
March 22, 2020, 7 a.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) 21.0 μg/m3 (19) 16.8 μg/m3 (60) 60.0
 
March 22, 2020, 6 a.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) 17.0 μg/m3 (15) 12.3 μg/m3 (51) 51.0
 
March 22, 2020, 5 a.m. 18.0 ppb (17) 7.0 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) 17.0 μg/m3 (15) 11.5 μg/m3 (48) 48.0
 
March 22, 2020, 4 a.m. 19.0 ppb (18) 6.0 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A 0.3 ppb (3) 18.0 μg/m3 (16) 10.9 μg/m3 (45) 45.0
 
March 22, 2020, 3 a.m. 26.0 ppb (24) 10.0 ppb (9) N/A 16.0 ppb (15) N/A N/A N/A 0.4 ppb (4) 17.0 μg/m3 (15) 9.7 μg/m3 (40) 40.0
 
March 22, 2020, 2 a.m. 36.0 ppb (33) 15.0 ppb (14) N/A 21.0 ppb (19) N/A N/A N/A 0.5 ppb (6) 26.0 μg/m3 (24) 13.3 μg/m3 (53) 53.0
 
March 22, 2020, 1 a.m. 31.0 ppb (29) 10.0 ppb (9) N/A 21.0 ppb (19) N/A N/A N/A 0.5 ppb (6) 23.0 μg/m3 (21) 10.8 μg/m3 (45) 45.0
 
March 22, 2020, midnight 27.0 ppb (25) 13.0 ppb (12) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) 17.0 μg/m3 (15) 8.6 μg/m3 (36) 36.0
 
March 21, 2020, 11 p.m. 31.0 ppb (29) 15.0 ppb (14) N/A 15.0 ppb (14) N/A N/A N/A 0.4 ppb (4) 24.0 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
March 21, 2020, 10 p.m. 28.0 ppb (26) 18.0 ppb (17) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
March 21, 2020, 9 p.m. 27.0 ppb (25) 17.0 ppb (16) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) 15.0 μg/m3 (14) 6.3 μg/m3 (26) 26.0
 
March 21, 2020, 8 p.m. 29.0 ppb (27) 17.0 ppb (16) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) 13.0 μg/m3 (12) 6.3 μg/m3 (26) 27.0
 
March 21, 2020, 7 p.m. 27.0 ppb (25) 16.0 ppb (15) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) 15.0 μg/m3 (14) 6.2 μg/m3 (26) 26.0
 
March 21, 2020, 6 p.m. 29.0 ppb (27) 18.0 ppb (17) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) 15.0 μg/m3 (14) 6.9 μg/m3 (29) 29.0
 
March 21, 2020, 5 p.m. 30.0 ppb (28) 18.0 ppb (17) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) 16.0 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
March 21, 2020, 4 p.m. 40.0 ppb (37) 27.0 ppb (25) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) 16.0 μg/m3 (15) 6.9 μg/m3 (29) 37.0
 
March 21, 2020, 3 p.m. 34.0 ppb (31) 23.0 ppb (21) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) 17.0 μg/m3 (15) 6.3 μg/m3 (26) 31.0
 
March 21, 2020, 2 p.m. 29.0 ppb (27) 20.0 ppb (19) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) 15.0 μg/m3 (14) 5.4 μg/m3 (23) 27.0
 
March 21, 2020, 1 p.m. 26.0 ppb (24) 14.0 ppb (13) N/A 12.0 ppb (11) N/A N/A N/A 0.2 ppb (2) 12.0 μg/m3 (11) 4.9 μg/m3 (20) 24.0
 
March 21, 2020, noon 28.0 ppb (26) 15.0 ppb (14) N/A 12.0 ppb (11) N/A N/A N/A 0.2 ppb (2) 13.0 μg/m3 (12) 4.9 μg/m3 (20) 26.0
 
March 21, 2020, 11 a.m. 17.0 ppb (16) 7.0 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.1 ppb (1) 12.0 μg/m3 (11) 4.8 μg/m3 (20) 20.0